Journal
GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII
Volume 10702, Issue -, Pages -Publisher
SPIE-INT SOC OPTICAL ENGINEERING
DOI: 10.1117/12.2313063
Keywords
Multi-Object Spectroscopy; Fiber Spectroscopy; Fiber Positioners; Prime Focus; Mayall Telescope; Cosmic Acceleration; Dark Energy
Categories
Funding
- Office of Science, Office of High Energy Physics of the U.S. Department of Energy [DEAC0205CH1123]
- National Energy Research Scientific Computing Center, a DOE Office of Science User Facility
- U.S. National Science Foundation, Division of Astronomical Sciences [AST-0950945]
- Science and Technologies Facilities Council of the United Kingdom
- Gordon and Betty Moore Foundation
- Heising-Simons Foundation
- National Council of Science and Technology of Mexico
- DESI
- STFC [ST/M002675/1, ST/P000541/1] Funding Source: UKRI
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The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 square degrees will be measured during the life of the experiment. A new prime focus corrector for the KPNO Mayall telescope will deliver light to 5000 fiber optic positioners. The fibers in turn feed ten broad-band spectrographs. We present an overview of the instrumentation, the main technical requirements and challenges, and the current status of the project.
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